@startuml
sprite $functions [48x48/16] {
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!define MATERIAL_FUNCTIONS(_alias) ENTITY(rectangle,black,functions,_alias,MATERIAL FUNCTIONS)
!define MATERIAL_FUNCTIONS(_alias, _label) ENTITY(rectangle,black,functions,_label, _alias,MATERIAL FUNCTIONS)
!define MATERIAL_FUNCTIONS(_alias, _label, _shape) ENTITY(_shape,black,functions,_label, _alias,MATERIAL FUNCTIONS)
!define MATERIAL_FUNCTIONS(_alias, _label, _shape, _color) ENTITY(_shape,_color,functions,_label, _alias,MATERIAL FUNCTIONS)
skinparam folderBackgroundColor<<MATERIAL FUNCTIONS>> White
@enduml